‍Strange, but I've ALWAYS done left pic, almost a bad luck superstition for me to do it as the right hand pic ... but according to the US inventor in the 19thC it is indeed 'correct' the LH one ... what do other posters 'do'??!

"The pic on the left is correct, anyone doing it the other way needs to take a long hard look at what their life has become. They've actually done studies on this before and found that people with lower incomes (or education, can't quite remember) do it like the right hand one. I can only assume this is because these people are indeed - as I hope everyone here will agree - stupid and don't understand that their way is quite clearly wrong. LH method you can quite clearly see where the tear lines are, you know how many sheets you'll be getting and your paper is less likely to brush up against a gross bathroom wall.
If you do the RH way I have zero respect for you as a human being and frankly think you should put yourself down the toilet along with your poorly ripped, quantity-of-sheets-unknown, germ-infested toilet paper."